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Jurnal Biologi
Published by Universitas Udayana
ISSN : 14105292     EISSN : 25992856     DOI : -
Jurnal Biologi Udayana (p-ISSN 1410-5292 | e-ISSN 2599-2856 | DOI 10.24843/jbiounud) managed by the Department of Biology, Udayana University, published in two formats namely print and online regularly twice a year (June and December).
Articles 125 Documents
DAYA HAMBAT FRAKSINASI EKSTRAK SEMBUNG DELAN (SPHAERANTUS INDICUS L) TERHADAP BAKTERI ESCHERICIA COLI DAN STAPHYLOCOCCUS AUREUS GEDE DARMAYASA, IDA BAGUS
Jurnal Biologi Vol XII, No 2
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A research entitled "Inhibitid activity of plant fractination extract of Sembung Delan (Sphaeranthus indicus L.) to Eschericia coli and Staphylococus aureus bacterial was carried aut to find the active of plant extract that responsible for bactericidal agent. This research used absorbance disc method to determine inhibitid fractionation extratc of Sembung Delan to growth of Eschericia coli and Staphylococus aureus bacterial. Results of this study showed that the crude extract of Sembung Delan inhibited the growth of Eschericia coli and Staphylococus aureus on Muller- Hinton medium, indicated by the formation of inhibition zone around the disc loaded with plant extract at concentration of 10,000 ppm, 20,000 ppm, 30,000 ppm, 40,000 ppm, and 50,000 ppm, with diamtre of 10mm, llmm, 12mm, 13mm and 16 mm respectively to S. aureus, forE. coli crude extract at concentration of 10,000 ppm, 20,000 ppm, 30,000 ppm, 40,000 ppm, and 50,000 ppm using diametre each of 12 mm, 13 mm, 15 mm, 17 mm and 19 mm respectively . From 17 fractions obtained from fractionation, fraction No. Vm (eluted with ethyl acetate:hexan) with Rf value of 0,9 ; 0,8 ; 0,7 ; 0,68 ; and 0,62, fraction No. DC (eluted with etihil acetate : hexan) with Rf value of : 0,98, ; 0,94 ; and 0,82, fraction No. XV (eluted with ethyl acetate 100%) Rf value of : 0.03; 0.23; 0.35 and fraction No. XVI (eluted with ethyl acetate 100%) with Rf value of: 0.03; 0.14; 0.17; 0.21, effectivity inhibited the growth of test bacterial.
PENGARUH PADAT PENEBARAN TERHADAP PERTAMBAHAN BERAT DAN PANJANG BADAN BELUT SAWAH (MONOPTERUS ALBUS) KETUT ALIT, I GUSTI
Jurnal Biologi Vol XIII, No 1
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This experiment performed to find out the effect of stocking density on body weight and body length of freshwater eel (Monopterus albus). In this experiment 160 individual freshwater eels that planted in 20 clay pots. Completely Randomized Design (CRD) with five treatments and four replicates applied in this experiment. The treatments of different stocking densities were 4 eels/pot, 6 eels/pot, 8 eels/pot, 10 eels/pot, 12 eels/pot. Significant gains were recorded on body weight (P0,05) for different stocking densities.
A TYPE OF DWARFISM FOUND IN SOUTH BENGKULU TO BE AN X-LINKAGE MUSLIM, CHOIRUL; KARYADI, BHAKTI; RUYANI, ACENG; PURNAMAWATI, ICE; -, HERNANI; -, SUMIYATI
Jurnal Biologi Vol XII, No 2
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We have reported here a specific human short stature population in Kedurang District, South Bengkulu. AH those are men, described as a mild dwarf (130-150 cm), detected after 5 to 10 years old, caused by the failure on lumbar backbone growth and development, and only found among the men. In this investigation, we examine the inheritance pattern of the dwarfism by using pedigree analysis, study the morphological comparison between the disorder and normal person, and finally we ascertain the variation among the disorder. We accomplished a survey on pedigree family to at least 3-4 generations related to the disorder. The data are then tested with Chi-square test, and transformed to tree families and pedigree analysis. To investigate morphological performance and their variation, we collected morphometric measurements to both disorder and normal group of sample; they are the height, the vertebral bones length, head measurement, the leg and arm length (upper and fore side), and their indexes. The data were analyzed descriptively. To find out the variation, the quantitative expression and penetrance, we evaluated the data according to normal distribution with Z test. The result showed all the dwarfisms in Kedurang are men, who inherited his gene from his carrier mother. As a result, the gene has tightly linked to X chromosome and supposedly belongs to Spondylo Epiphypeseal Dysplasia Tarda (SEDT). These were concluded from 32 related family of dwarfism. We found 19 dwarf persons, grouped into young, adult, and older persons. The their height were shorter than normal (136,5 cm), and the length of vertebrae was under normal value (51,5 cm). Their frontal extremity were shorter than the normal one, but they are in proportion with any part comprised them. Their feet were shorter, but the proportion of leg is longer than calf. The rest is as normally. Among the dwarf person, there are variations of the length. The phenotypic expressivity is varied in the vertebrae, leg, and calf; but the rest is relatively invariable. Their penetrance is strong, mostly in the height, length of vertebrae, and legs. Based on morphological data we concluded that the disorder in the Kedurang, South Bengkulu belongs to SEDT (Spondyloepiphyseal dysplasia tardd).
PERILAKU DAN JENIS PAKAN ORANGUTAN KALIMANTAN (PONGO PYGMAEUS LINNAEUS, 1760) DL KALIMANTAN KUNCORO, PURWO; -, SUDARYANTO; ESWARYANTI KUSUMA YUNI, LUH Puru
Jurnal Biologi Vol XII, No 2
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Data collection was conducted using focal animal instantaneous. The daily activity data were group based on their ethogram and was adopting "The Standard of Orangutans collection" from Morrogh-Bernard et al. (2002). The research collected 739 hours 29 minutes of dawn to dusk observations. The daily activity was determined by activity proportion. Rehabilitated Orangutans was found to have higher proportion of social activity (79,29%) than the one of self-action activity (23,71%). The daily activity proportions consisted of 10,44% (females) and 14,13% (males) for movement, 29,01% (females) and 30,66% (males) for resting, 12,34% (females) and 4,90% (males) for social activities, 3,36% (females) and 2,49% (males) for self activities, and also 44,85% (females) and 47,82% (males) for foraging with 96 plants species and 1 termite species as food sources.
POLA REPRODUKSI PADA SALAK BALI (SA/ACCA ZA/ACCA VAR. AMBOINENSIS (BECC.) MOGEA KRISWIYANTI, ENIEK ; MUKSIN, I KETUT; WATINIASIH, LUH; SUARTINI, MADE
Jurnal Biologi Vol XII, No 2
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Research on reproduction patterns of Balinese snake skin fruits (Salak Bali) has been conducted by identifying the availability of pollens on anthers of male and hermaphrodite flowers, the viability of pollens in the pistillum and the present of embryo(s) in the ovulum. Flower samples were collected from Sibetan and Muncan Villages, Karangasem regency. Sample preparations and identifications were conducted in "Stuktur dan Perkembangan Tumbuhan Laboratory" Department of Bilogy, FMIPA Udayana University. The results showed that the pollen has a single apperture, unisulcus, minuta, oblat sferoidal type. The length of polar axis was 15-24 jam (P) and equatorial diameter of 16-24 |im (E). Therefore, the P/E index was 0.99-1.0. The pollen viability before and after anthesis of hermaphrodite flowers was low (71.4% and 50.6% respectively), with very low pollen tube germinations (0.08% of before and 0.48% after anthesis). Similarly, on the anthers of male flowers, the viability of pollens before anthesis was low (75.7%) with pollen germination of 0.18%, and event lower in after anthesis flowers (28.8%) with 0.29% pollen tube germination. Squashed stigma before and after anthesis and 2 days after flowers were opened showed that there was no germination occurred. Therefore, there was no germination in the pistillum, but the embryo developed before flower anthesis, indicates that the reproduction pattern of Salak Bali occurred without fertilizations (agamospermy).
STRATEGI MENCARI MAKAN BURUNG PECUK PADI HITAM (PHALACROCORAX SULDROSTRIS) DI SUAKA MARGASATWA PULAU RAMBUT, TELUK JAKARTA FlTHRI, AlDA
Jurnal Biologi Vol XII, No 2
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Little black cormorant (Phalacrocorax suldrostris} feeding activity around their breeding area face many problem such as high velocity wind and piracy by frigate birds. P. suldrostris developed six type of flying to overcome high velocity wind and flew in group to avoid frigate attack. As much as 13 fish species were consumed by little black cormorant during this research.
KAJIAN EKSPRESI PROTEIN BAX PADA GANGGUAN SPERMATOGENESIS PASCA PEMAPARAN 2,5-HEXANADIONE, PADA TIKUS PUTIH (RATTUS NORVEGICUS L) -, MAHRIANI
Jurnal Biologi Vol XII, No 1
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The disturbance of spermatogenesis after exposure with 2,5-HD (2,5-Hexanedione) can be observed through the increasing of death cell in apoptosis mechanism, that can be observed through the expression of Bax protein. Therefore, it had been conducted a research to study the expression of Bax protein against white mouse of Wistar strain exposured with 2,5-HD. A number of 56 white mouse were divided randomly into 8 groups, each group consists of 7 white mouse, two groups were used as pretest, three groups used as control treatment, and three groups used as treatment were exposured with 2,5-HD of 0,06 mg/WW during 2, 4, 6 week. The changes in the Bax protein expression observed in the slices of cross section of testis using imunohistochemical method. The research result shows that the longer duration of 2,5-HD exposure causes the more increase the expression of Bax protein at the sertoli cell and the germinal. The expression of Bax protein compared to the control groups increases into 132%, 112%, 108% and 123% respectively for the sertoli, spermatogonial, spermatocyt, and spermatid cells in the treatment were exposured with 2,5-HD during 6 weeks. It is needed a further research to complete information of apoptosis mechanism as the result of 2,5-HD exposure, by study the ratio of Bcl-2/Bax expression as the antiapoptosis and proapoptosis proteins.
POTENSI MELANOTUS SP. DALAM MENDEGRADASI LIGNIN SULISTINAH, NUNIK
Jurnal Biologi Vol XII, No 1
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Ten isolates of fungus were isolated from oil palm stem at oil palm plantation in Medan All of them were tested its abilities to degrade lignin. The results showed that one of them was able to grow on ligninase media and the fungi has the ability to degrade ligin. The fungi is identified as Melanotus sp.
STRUKTUR, KOMPOSISI DAN STATUS TUMBUHAN OBAT DL KAWASAN HUTAN TAMAN NASIONAL ALAS PURWO HIDAYAT, SYAMSUL
Jurnal Biologi Vol XII, No 1
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Alas Purwo National Park is one of representative tropical low rain forests at eastern Java. There are many natural attractive sites and historical legend, which lead to, famous for ecotourisme activities. There are also rich of flora and fauna that some of them endemic and endangered species. Medicinal plant is one important material on the forest, which still unexplored more. Ten sampling transects were established in some sector of Alas Purwo for inventory of wild medicinal plants. The result shows that at least 5 species have been categorized as an endangered plant. Meanwhile, the structure and composition of endangered medicinal plants is not better than common medicinal plants.
CA2+ INTRASELULER TERLIBAT DALAM MEKANISME PEMBUKAAN STOMATA AKIBAT PENGARUH AUXIN PHARMAWATI, MADE; DEFIANI, MADE RIA; ARPIWI, Ni LUH
Jurnal Biologi Vol XII, No 1
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Research was done to elucidate the role of Ca2+ intracellular in stomatal movement induced by auxin. Two types of auxin (IAA and NAA) increased stomatal opening and the increase was concentration dependent. The addition of EGTA, Ruthenium red and Procaine as the modulator of Ca2+ concentration , inhibited stomatal opening induced by auxin. EGTA and procaine significantly inhibited somatal opening at 100 uM and 1 mM. Ruthenium red worked at lower concentrations which were 10 uM, 50 uM and 100 uM on LAA-induced stomatal opening, while on NAA-induced stomatal opening, Ruthenium red had an effect at 10 uM, 50 uM, 100 uM dan 1 mM. It is suggested that Ca2+ involves in stomatal opening induced by LAA and NAA as signaling agent.

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